Consolidated Statement of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Treasury Stock	Deferred Compensation Obligation	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance — (in shares) at Dec. 31, 2016		176,793			46,980
Balance — at Dec. 31, 2016	$ 1,637,388	$ 220,991	$ 488,882	$ 3,601,362	$ (2,078,527)	$ 8,507	$ (624,788)	$ 20,961
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans	(4,510)		(23,479)		$ 18,969
Stock activity under stock plans (in shares)					509
Stock-based compensation	22,820		22,820
Tax benefit associated with stock-based compensation	103		103
Net earnings	4,328			2,652				1,676
Cash dividends declared	(100,067)			(100,067)
Other comprehensive loss, net of tax	119,753						119,315	438
Other, net	(8,861)					(2,153)		(6,708)
Balance — (in shares) at Dec. 31, 2017		176,793			46,471
Balance — at Dec. 31, 2017	1,670,954	$ 220,991	488,326	3,503,947	$ (2,059,558)	6,354	(505,473)	16,367
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans	(3,533)		(13,687)		$ 10,154
Stock activity under stock plans (in shares)					234
Stock-based compensation	19,912		19,912
Net earnings	125,050			119,671				5,379
Cash dividends declared	(100,253)			(100,253)
Other comprehensive loss, net of tax	(67,806)						(68,474)	668
Other, net	$ (3,186)					763		(3,949)
Balance — (in shares) at Dec. 31, 2018	176,793	176,793			46,237
Balance — at Dec. 31, 2018	$ 1,660,780	$ 220,991	494,551	3,543,007	$ (2,049,404)	7,117	(573,947)	18,465
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans	(3,350)		(17,388)		$ 12,821	1,217
Stock activity under stock plans (in shares)					300
Stock-based compensation	23,882		23,882
Net earnings	261,780			253,668				8,112
Cash dividends declared	(100,813)			(100,813)
Other comprehensive loss, net of tax	(9,766)						(10,345)	579
Other, net	(1,554)					0		(1,554)
Repurchases of common shares (in shares)					(325)
Repurchases of common shares	$ (15,000)				$ (15,000)
Balance — (in shares) at Dec. 31, 2019	176,793	176,793			46,262
Balance — at Dec. 31, 2019	$ 1,815,959	$ 220,991	$ 501,045	$ 3,695,862	$ (2,051,583)	$ 8,334	$ (584,292)	$ 25,602